Search results for "alimentació"
showing 10 items of 105 documents
Analysis of phytosterols in foods
2006
Phytosterols are bioactive compounds, one of their most studied and outstanding properties being their cholesterol-lowering activity. This explains the growing interest in the phytosterol contents of foods as either intrinsic or added components. The different steps (extraction, saponification, clean up, chromatographic determination) of plant sterol determination are reviewed, and emphasis is placed on the methods used to assay different phytosterols in food.
¿Nuevo capitalismo?
2008
Tipología y patrones de los bulos difundidos durante la pandemia de la covid-19 sobre salud y nutrición
2022
This study aims to identify the typology and patterns of hoaxes related to health and nutrition disseminated during the first stage of the COVID-19 pandemic (March-November 2020). To do this, an exploratory quantitative study was carried out with two data types. The first data comes from studying 95 documents (scientific articles) found in the SCOPUS database through Boolean searches with the terms (dis)misinformation, hoax, health, and nutrition. A registration form was used for these documents, indicating the following items: a) topic of the article (health or nutrition); b) the type of wrong message (misinformation or hoax); c) the country in which the study was done; d) the type of part…
A headspace solid-phase microextraction method of use in monitoring hexanal and pentane during storage: Application to liquid infant foods and powder…
2006
The determination of two secondary lipid oxidation compounds (hexanal and pentane) in liquid infant foods using a headspace solid-phase microextraction gas chromatographic (HS-SPME-GC) method has been developed and validated. The HS-SPME analytical conditions (fibre position, equilibration and sampling times) were selected. The analytical parameters of the method (linearity: hexanal from 2.48 to 84.78 ng/g, pentane from 6.21 to 79.55 ng/g; precision: hexanal 2.87%, pentane 2.343.46%; recovery: hexanal 106.60%, pentane 95.39%; detection limit: hexanal 3.63 ng and pentane 4.2 ng) demonstrate the usefulness of the method. Once optimized, the method was applied to liquid infant foods based on m…
Functional implications of bound phenolic compounds and phenolics–food interaction: A review
2022
Sizeable scientific evidence indicates the health benefits related to phenolic compounds and dietary fiber. Various phenolic compounds-rich foods or ingredients are also rich in dietary fiber, and these two health components may interrelate via noncovalent (reversible) and covalent (mostly irreversible) interactions. Notwithstanding, these interactions are responsible for the carrier effect ascribed to fiber toward the digestive systemand canmodulate the bioaccessibility of phenolics, thus shaping health-promoting effects in vivo. On this basis, the present review focuses on the nature, occurrence, and implications of the interactions between phenolics and food components. Covalent and nonc…
Disseny i desenvolupament d'exams a partir d'eines de web semàntica
2011
La Web Semàntica no és una proposta de futur. És una realitat. Davant del creixement caòtic de recursos i l'absència d'una organització clara del web actual, la web semàntica advoca per classificar, dotar d'estructura i anotar els recursos amb semàntica explícita processable per màquines. En aquest article presentem els resultats d'una investigació realitzada a la Universitat de Múrcia pel grup TECNOMOD i el GITE, que de manera multidisciplinar hem abordat l'aplicació d'un programa semàntic denominat OeLE en una assignatura virtual de la Titulació de Pedagogia. Es va dissenyar un entorn d'avaluació en xarxa compost pel programa OeLE i un sistema de consulta del feedback que OeLE proporciona…
Liderazgo pedagógico en directores nóveles en Chile: Prácticas de observación de clases y retroalimentación a profesores
2016
El rol de los directores escolares es clave para movilizar la mejora de los centros escolares. A través de un enfoque cualitativo-longitudinal utilizando la técnica thin-slice, este artículo examinó la calidad de las prácticas asociadas con la observación en el aula y la retroalimentación proporcionada por 10 directores nóveles al final de su primer y su segundo año en el cargo. Los resultados de este estudio señalan que el patrón de observación de los directores nóveles experimenta cambios desde el primer al segundo año en el cargo, desde un foco en los docentes y el contenido hacia un foco en la interacción contenidos-estudiantes. Respecto del tipo de retroalimentación en el año 2 se obse…
Obesity and Cardiometabolic Risk Factors : from Childhood to Adulthood
2021
Obesity has become a major epidemic in the 21st century. It increases the risk of dyslipidemia, hypertension, and type 2 diabetes, which are known cardiometabolic risk factors and components of the metabolic syndrome. Although overt cardiovascular (CV) diseases such as stroke or myocardial infarction are the domain of adulthood, it is evident that the CV continuum begins very early in life. Recognition of risk factors and early stages of CV damage, at a time when these processes are still reversible, and the development of prevention strategies are major pillars in reducing CV morbidity and mortality in the general population. In this review, we will discuss the role of well-known but also …
Scientific studies on writing in second language learning (2005-2017)
2019
Este artículo revisa críticamente las líneas temáticas que desde 2005 hasta 2017 se han publicado sobre Second Language Writing (SLW) con el objetivo de presentar un análisis de las tendencias predominantes en las publicaciones indexadas en SCOPUS. Como metodología de estudio se ha procedido a la selección de aquellas contribuciones que han recibido 60 citas o más. De la revisión de literatura científica realizada se concluye que son tres las líneas de investigación mayoritarias: el proceso de composición o redacción del texto escrito; la retroalimentación que el docente ofrece al aprendiz; y la escritura en línea de una L2. Las conclusiones señalan la necesidad de profundizar en la investi…
Towards a more sustainable food Supply chain: opening up invisible waste in food service
2016
Future challenges to the global food supply chain are complex. In order to embrace sustainability, companies should change their management practices towards more efficient resource use. Food waste being a misuse of resources, we identify its causes and possible ways of minimising it. To achieve this goal, we conducted explorative research with qualitative and quantitative data through in-depth semi-structured interviews and an open questionnaire with top Spanish food service companies. Results show that most businesses mainly tend to minimise food waste according to economic criteria, without taking into account the social, ethical or environmental factors. As a consequence, just “visible”…